Lamp-base.



T. W. FRESH, J11.

LAMP BASE. APPLICATION FILED MAR. 27. 1007.

716152 6 J u" e y jweiz/fw? @QKM/QM. 9W saw,

PATENTED JAN, 7, 1908.

-to produce a base which shall not only conill CLiC-Y llLlIiD, Gilli).

nation of lotters Tcatozzt.

. 51 i907, Serial Us. 36-1355.

H0. 8745,7236. Patented Jam. 7, 1908.

1' b all whom i2: may; concarzz: l ho." mien found, in practice, that to liflz 'fl l: it'ltnown. that l, 'llunouonr W. nnon, the shirt forr ied of porcelain is not alto- Qlifl, a citizen of the lllil'liifd Stat dialing zit grcthcr 52c isl aotory sincc it it) notonly heavy Qlcvclnnd, in tho 9 int}; ol' Luynhogn and but 0 respond with rcndincss to the State of Ohio, have invent 0d n lain now ol the lump thus causing tho cracking of useful Irnprovcmcnl; in Lump-Buses, of

which the following is 8, full, clear, and exact l the neck of the bull) which has a higher rate ol expansion. That form of base in WlllCll description.

rm ,ihc ob ect of the present invention is to the Sillt is made 01" metal and separated from the metallic screw thread by an insuprovide an improved form of base for incandescent lumps.

lating porcelain insc t, is, owing to the number of parts, and tinic required in litting,

The particular purpose of the invention is rather expensive to make and the consequent liability to breakage and the cost of transportation in largo quantities are features of much concern.

According to my invention, I have constructed the shell of the base of a continuous piece of metal, one ortion of which, A, is shaped to n sci-cw thread of the standard mild in adapted to be lit'tcd into the standard (litl in tho ordiimry way. The othcr and, B, ol the busc, is enlarged and would projoct from the socket so as to renc hull). "l -l *.'i .u ;l this form of form to the conditions imposed by tho nor ssitics of utility and mimulccture and the rcquiremcnts oi the [ire underwriters and yet be a marked advance in the art both an: to simplicity and cliezipncss of COliiill'UULlOil. The base which l hzivc Pllnll'lijil has thcn'n advmituges and certain additional an failu ahlo clmructcristics in the. lllzltltl of wright and freedom from hrcnlszigc.

cfcrring to the cccompnnyirg drnwiw which illustrate an cmlmdimcnt or" my in cum,

tion, Figure l. is an elevation o n busec l l: bomgg of th nnlal and capable of bcstructcd according to my lnvr-ntlon, l i; l n ornicd ol out not at n, single stumping, is an onlurgcd dcln l cordon Shaw-$5111 in niamlaciurc not possessed is nlso much s-md it run; in which. the th insulators are employed, :1 bzm: of fidt'l \i 'iplc connlrnotion would nol .znrct iln: tllfciri'illis of the fire under-- \i'l'itci'fi. i lmvc diswvcrcd, however, that ho Sll H'i urn nniy be pcriccted by insulating l skirt in tho following manner not only n unsightly object but, a t, mroving the finish h cllccting the insulation.

features of construcii In the ninnulnriin ltrnps it has bur-n found two; portion of thc h or cro riil. screw tln'cnd so that all iHlSin' mil plied to all Soclu-is. 'lhin in :1 ('(Hlli quircmcnt that is pm l cz-dly in pr; is, howcvcr, not. possihlc tn hm? thc m the iampdmlbs lill :SEJIH nix c, only Variety of Styli-s of l inward through, so that ii ll l :1 [con lo thing-to inscrt line or ilw Lhc inns? or to on of 1hr hzrsc of I [mm llli l :0, \r ihoni prodm'iin n. in; n 1112 1 1' ol 1 nilinncumtl ii'i l npply c lnycr U of japan to the exterior portion which will be exposed and to the I I01 portion, also, a short distance within nooks the screw thrcndco portiln: of l make lZl'lQ'IlC-(Jli holding;- the szunc dinnic cr m: t tion which is l lions on in. but

l'vi :1 shirt will; .1, v [to l o lo so and is turncd i -to the socket, proiocts out c shirt for a short distcr so on to 2:0 pply a second cooling writers have raga di ii inf/Eli irnd nnltc it Thu ju unis itself that itlms beomnc-c an insulator but would, if applied to the skirt of at scpnri' A 1 di l r and unprotected, be readily 'ng material, such as 1 as, in my construction, the protected by tho 'illJXOUS "outing is hold by this I lw 5 and or else of metal w on annulus of k idcd nilctclhc or will no zrzzcl: or

" of fibrous insulnt- 10 it is Uflncscss" construction and mp1].

20 claim:

skirt, said skirt being coated with M1 I have used papal and a 1 (20min Lile layer 01"" ii l'nous pliable i I 4 kid skirt be that such Works well it E 'i in uir v shall I), in. and have that up A beimmz 3,2 in cunjun layer f t msu -x mg in zaici g a cam-- fall iron; lzlle wise.

lamp base comprising a (zmitil'umus -l slmli slumped to have a skirt l0? r0- 4,; lnm') bull), ills sk .i being insu- "y to dwell upon al 163$ 01 a base van Lagos in hm ol' his const'rulfll 4 olwi to all those skilled in the ml, but litleliwm lu is particularly directel lo fill: simplicity of ily V'fl ii which such bases may be mil-me as (.llSL

those in which the various 1 l BXlGIZ lilf and about H5 all c 2L 0i ins-nulzztloii liming lillru body l KIA, i x a coat oi: shellac cuntziminq .i-lul).'-'til.l.l (f

1. Ban ii'lcamlcscen'b lamp base 1 projecting skirt, said skirt being c021 2 sloselywlherant Lill'llOUS ins -l lin j 2. An lucanzlosceni lamp G W. FHE XI" iRFL P. HARms,

sive subsl zmce and an cuter layer of 53 J LJIICE N. "1111111.

fibrous insulating material. 

